he began his career as a defensive lineman for the detroit lions. but he is probably best known as his role as the dad in the 1980s sitcom "webster." his family said he's been struggling with dementia for years. he was one of thousands of players now suing the nfl over the treatment of head injuries. he was 77, and he died at his home in los angeles. >>> when we come right back on news4 at 5:00 tonight, a father's warning about letting young children use xbox. why he says it opens up the door to predators. >>> in just minutes tonight at 6:00, we have new details about a deadly shooting in the district. police chief captain lanier is on the scene. >>> a father makes a disturbing discovery about his son's xbox. >> nbc's phil rogers explains how the video console allowed a predator to come into the family's home. >> reporter: this man, we'll call him john, asked that we conceal his identity because he wanted to protect his son. it was shortly after he bought the family a new xbox 360 connect that he heard a man's voice coming from the game's speakers w